COMBUSTION TYPE POWER HEATER SYSTEM DIAGNOSTIC TROUBLE CODE CHART

Combustion Type Power Heater System
DTC Code Detection Item Trouble Area See page
010 Over Voltage Shutoff

- Wire harness or connector between combustion heater assembly and battery

- Battery

- Power management control ECU

- Power heater ECU (combustion heater assembly)

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011 Under Voltage Shutoff

- Wire harness or connector between combustion heater assembly and battery

- Battery

- Power management control ECU

- Power heater ECU (combustion heater assembly)

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012 Overheating

- Surface sensor (combustion heater assembly)

- Temperature control sensor (combustion heater assembly)

- Engine coolant circuit (leaks, engine coolant quality, thermostat, water pump assembly)

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014 Difference Evaluation Overheating

- Surface sensor (combustion heater assembly)

- Temperature control sensor (combustion heater assembly)

- Engine coolant circuit

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015 Operating Block caused by Overheating

- Engine coolant circuit

- Power heater ECU (combustion heater assembly)

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016 Difference Evaluation 2

- Surface sensor (combustion heater assembly)

- Temperature control sensor (combustion heater assembly)

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017 Hardware Overheating

- Temperature control sensor (combustion heater assembly)

- Surface sensor (combustion heater assembly)

- Engine coolant circuit

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020 Glow Plug Malfunction

- Glow plug (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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021 Glow Plug Output Overload

- Glow plug (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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022 Glow Plug Output Error

- Power heater ECU (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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025 Short in K-line Circuit - Wire harness or connector (combustion heater assembly)

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030 Abnormal Combustion Air Blower Motor Speed - Air blower motor (combustion heater assembly)

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031 Combustion Air Blower Motor Malfunction

- Air blower motor (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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032 Short in Combustion Air Blower Motor Circuit - Wire harness or connector (combustion heater assembly)

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034 Combustion Air Blower Motor Output Error

- Power heater ECU (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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047 Short in Heater Fuel Pump Circuit

- Wire harness or connector between combustion heater assembly and heater fuel pump sub-assembly

- Wire harness or connector between heater pump assembly and body ground

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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048 Heater Fuel Pump Malfunction

- Wire harness or connector between combustion heater assembly and heater fuel pump sub-assembly

- Wire harness or connector between heater fuel pump sub-assembly and body ground

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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049 Heater Fuel Pump Output Error

- Wire harness or connector between combustion heater assembly and heater fuel pump sub-assembly

- Wire harness or connector between heater fuel pump sub-assembly and body ground

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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050 Detection of No Ignition

- Air duct

- Exhaust pipe

- Fuel pump filter (heater fuel pump sub-assembly)

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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051 Cold Blow Time Exceeded

- Power heater ECU (combustion heater assembly)

- Exhaust pipe

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052 Safety Time Exceeded

- Air duct

- Exhaust pipe

- Fuel pump filter (heater fuel pump sub-assembly)

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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054 High Setting of Flame Cutout

- Air duct

- Exhaust pipe

- Fuel pump filter (heater fuel pump sub-assembly)

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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056 Low Setting of Flame Cutout

- Air duct

- Exhaust pipe

- Fuel pump filter (heater fuel pump sub-assembly)

- Heater fuel pump sub-assembly

- Power heater ECU (combustion heater assembly)

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060 Overheating Control Sensor Malfunction - Temperature control sensor (combustion heater assembly)

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061 Short in Overheating Control Sensor Circuit

- Temperature control sensor (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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064 Flame Sensor Malfunction - Flame sensor (combustion heater assembly)

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065 Short in Flame Sensor Circuit

- Flame sensor (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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071 Surface Sensor Malfunction - Surface sensor (combustion heater assembly)

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072 Short in Surface Sensor Circuit

- Surface sensor (combustion heater assembly)

- Wire harness or connector (combustion heater assembly)

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074 ECU Overheating - Power heater ECU (combustion heater assembly)

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090 ECU Internal Malfunction / Reset Detection - Power heater ECU (combustion heater assembly)

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091 Repeated Resets Detection - Power heater ECU (combustion heater assembly)

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092 ROM Error - Power heater ECU (combustion heater assembly)

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093 RAM Error - Power heater ECU (combustion heater assembly)

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094 Transistor Malfunction - Power heater ECU (combustion heater assembly)

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095 Software Stuck Overflow - Power heater ECU (combustion heater assembly)

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096 Operation Locked Detection - Power heater ECU (combustion heater assembly)

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097 ECU Defects - Power heater ECU (combustion heater assembly)

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098 Main Relay Malfunction - Power heater ECU (combustion heater assembly)

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099 EEPROM Error - Power heater ECU (combustion heater assembly)

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